Kioxia samples first UFS 4.0 embedded flash

Kioxia samples first UFS 4.0 embedded flash

Business news |
By Nick Flaherty

Kioxia is sampling the industry’s first Universal Flash Storage (UFS) Version 4.0 embedded flash memory devices for automotive applications.

UFS 4.0 embedded flash from Kioxia enables faster transfer speeds in a small package size for next-generation automotive applications, including telematics, infotainment systems and ADAS. The latest devices double the sequential read and boost the sequential write by approximately 40%.

Kioxia was the first to introduce the technology and the UFS 4.0 devices integrate the company’s BiCS FLASH 3D flash memory and a controller in a JEDEC-standard package. This incorporates MIPI M-PHY 5.0 and UniPro 2.0 and supports theoretical interface speeds of up to 23.2 gigabits per second (Gbp/s) per lane or 46.4 Gbp/s per device and is backwards compatible with UFS 3.1.

The devices support High Speed Link Startup Sequence (HS-LSS) features, enabling Link Startup (M-PHY and UniPro initialization sequence) between device and host to be performed at a faster HS-G1 Rate A (1248 megabits per second7) than that of conventional UFS. This is expected to reduce the time for Link Startup by approximately 70% compared to the conventional method.

A refresh feature improves data reliability by refreshing degraded data to prevent data corruption even in the harsh, demanding in-vehicle environment. Extended diagnosis enables users to view important information from the device, allowing preventative action to be taken.

The devices are available in capacities of 128, 256 and 512 gigabytes (GB) and support a wide temperature range, meet AEC8-Q100 Grade requirements and offer enhanced reliability capabilities that complex automotive applications require.

“Kioxia continues to demonstrate its leadership in UFS memory with the introduction of the industry’s first UFS 4.0 device for automotive applications,” said Maitry Dholakia, vice president, Memory Business Unit, for Kioxia America. “The accelerated processing power and increased data storage capacity it provides will enable the next generation of automotive systems that can that take advantage of 5G, IoT and artificial intelligence.”


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